ELECTRIC PARKING BRAKE SYSTEM, Diagnostic DTC:C13A0/11, C13A5/41, C13B0

DTC Code DTC Name
C13A0/11 Open in Power Supply Relay Circuit
C13A5/41 Electric Current of Motor
C13B0 Electric Parking Brake ECU Malfunction

DESCRIPTION

The following DTCs are stored when a malfunction occurs in the parking brake ECU assembly.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory Note
C13A0/11 Open in Power Supply Relay Circuit

Both of following conditions are met:


  1. Power switch on (IG) or electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off.

  2. Parking brake ECU assembly power source relay circuit is open for approximately 0.5 seconds.

 Parking brake ECU assembly DTC stored An electric parking brake system malfunction is displayed on the multi-information display.
C13A5/41 Electric Current of Motor

Both of following conditions are met:


  1. Power switch on (IG) or electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off.

  2. Parking brake ECU assembly internal current is abnormal for approximately 0.1 to 0.5 seconds (differs according to malfunction).

 Parking brake ECU assembly DTC stored An electric parking brake system malfunction is displayed on the multi-information display.
C13B0 Electric Parking Brake ECU Malfunction

Both of following conditions are met:


  1. Power switch on (IG) or electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off.

  2. Internal current of parking brake ECU assembly or ECU components abnormal for a maximum of 60 seconds (differs according to malfunction).

 Parking brake ECU assembly DTC stored An electric parking brake system malfunction is displayed on the multi-information display.
DTC Detection Conditions: C13A0/11
Vehicle Condition
Pattern 1 Pattern 2
Diagnosis Condition Power switch on (IG) ○ -
Electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off - ○
Malfunction Status Parking brake ECU assembly's power source relay is open ○ ○
Detection Time Approximately 0.5 seconds Approximately 0.5 seconds
Number of Trips 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C13A5/41
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition Power switch on (IG) ○ - ○ -
Electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off - ○ - ○
Malfunction Status Parking brake ECU assembly's internal current is abnormal (When parking brake is operating) ○ ○ - -
Parking brake ECU assembly's internal current is abnormal (When parking brake is not operating) - - ○ ○
Detection Time Approximately 0.3 seconds Approximately 0.3 seconds Approximately 0.5 seconds Approximately 0.5 seconds
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

DTC Detection Conditions: C13B0
Vehicle Condition
Pattern 1 Pattern 2 Pattern 3 Pattern 4
Diagnosis Condition Power switch on (IG) ○ - ○ -
Electric parking brake switch (electric parking brake switch assembly) pulled to lock side with power switch off - ○ - ○
Malfunction Status Parking brake ECU assembly's internal voltage is abnormal ○ ○ - -
EEPROM is malfunctioning - - ○ ○
Detection Time Approximately 0.5 seconds Approximately 0.5 seconds Approximately 0.5 seconds Approximately 0.5 seconds
Number of Trips 1 trip 1 trip 1 trip 1 trip

Tech Tips

DTC will be output when conditions for either of the patterns in the table above are met.

CAUTION / NOTICE / HINT

Note

When replacing the parking brake ECU assembly, operate the electric parking brake switch (electric parking brake switch assembly) as the parking brake indicator light (red) blinks when the power switch is first turned on (IG).

PROCEDURE


  1. REPLACE PARKING BRAKE ECU ASSEMBLY


    1. Replace the parking brake ECU assembly.

      Click here

      Result
      Proceed to
      NEXT

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    END